Rollcaster go fast but i beet you have that a rollcaster is full of GPE and KE. It stars whin none becuse it is at the buttem. Becuse it has maved yet. a example is point 1 it has the most GPE. Becuse it hasgone to the top of the rollcaster. a nather is point 2 is losing GPE. Becese It went to the buttem of the rollcaster. Point 3 Is gitting higher sow it is gitting GPE. Becuse it is going up sow it is staring to gitting GPE. And on the afther sied there is KE. 3 examplas of KE is are. Point 1 has no KE. point 2 has a lot of KE. Point 3 is losing KE. As you can see a rollercaster is full of KE and GPE.